PCR tests are the "gold standard" COVID tests for consumers. They are way more accurate than antigen tests (the most common tests consumers can get). PCR tests are not going away.
There are countless places to get a PCR test. I'd wager most forum users have taken them. The time it takes to get test results will vary wildly - from a few minutes (rare, expensive) to 24-48 hours (this was typically the norm last summer, before omicron). Before my trip to Europe last August, free PCR tests were available everywhere in my home town (Seattle) -- literally, like on every street corner in some neighborhoods -- you just needed to go online and make an appointment, but availability and turnaround all depended (and still does) on your location and current local demand. Now, with omicron raging, test availability has obviously changed dramatically (because demand has completely blown up along with infection rates).
Prior to international travel in August, I could get a no-cost-to-me PCR test "tomorrow" at hundreds of nearby locations. I ended up taking four tests in the days before I departed (because, turn-around times are not guaranteed, and I had a complex and conflicting set of testing requirements because of multiple long flights and different test requirements). I received test results between 24-36 hours from when I took them. Two from big-chain pharmacies, two from city/state-run test clinics.
April is a long, long time away. A lot will change between now and your departure. Count on that, keep on top of what the latest options/requirements are, and roll with the punches (repeatedly).
Google is your friend. Try "COVID PCR tests near me". Good luck.